18905084 has 12 divisors (see below), whose sum is σ = 36091608. Its totient is φ = 8593200.

The previous prime is 18905053. The next prime is 18905087. The reversal of 18905084 is 48050981.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18905087) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 214787 + ... + 214874.

It is an arithmetic number, because the mean of its divisors is an integer number (3007634).

Almost surely, 2^18905084 is an apocalyptic number.

It is an amenable number.

18905084 is a deficient number, since it is larger than the sum of its proper divisors (17186524).

18905084 is a wasteful number, since it uses less digits than its factorization.

18905084 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 429676 (or 429674 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 35.

The square root of 18905084 is about 4347.9977000914. The cubic root of 18905084 is about 266.3950825294.

The spelling of 18905084 in words is "eighteen million, nine hundred five thousand, eighty-four".